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watershed
All of the land that drains into the river
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floodplain
the flat land next to a river that is covered with water during floods
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tributary
a small stream that runs into a larger one
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point pollution
- pollution that can be tracked
- Ex:factory stacks, pipes
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non-point pollution
- can not be tracked
- Ex:runoff, storm sewers,fertilizers
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benthic macroinvertebrates
- insects on the bottom of the creek
- short life cycle
- easy to catch and identify
- sensitive to polluntion
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trophic level
- omnivore-plants, eat decaying plant
- herbivore-scrape algae off rocks
- carnivore -eat other benthics
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taxa
level of sensitivity to pollution
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population
a single species living in one place at a time
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carrying capacity
population size that environment can support
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density-dependent factors
- resoures that are used up faster if population is large
- Ex:predation,disease,shelter,water and food
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density-independent factors
- are not affected by population density
- Ex:weather and climate
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r-strategists
- often in rapidly changing environments
- small
- rproduce rapidly
- short life
- many off spring
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k-strategists
- grow slow
- small population
- long life
- reproduce late
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community
many different species that live together
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ecosystem
a community and all the non-living parts or habitat
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Erosion
when sediment falls off the vanks into tream
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embededdness
how far rocks are in ground
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- DRAGONFLY
- predator
- taza 2
- scoop-like lower jaw
- flattened head
- no tail appendages
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- DAMSELFLY
- predator
- taxa 2
- 3 leaf-shaped tail appendages
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- MAYFLY
- 3 tail appendages
- live in clear streams
- taxa 1
- make the M with your hand
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- CADDISFLY
- many make cases out of rocks/leaves
- we see the one without the case
- taxt 2
- hard head capsule
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- MIDGE LARVA
- C-shaped
- taxa 3
- lives in low qality streams
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- BLACK FLY LARVA
- lower end of body is wider than the head
- taxa 3
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- SOWBUG
- long antennae
- many legs
- vertically flat
- taxa 2
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- SCUD
- many legs
- horizantally flat
- taxa 2
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- CRAYFISH
- claws
- resembles small lobster
- taxa 2
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- WATER STRIDER
- not a benthic
- lives on the surface of hte water
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- LEECH
- segmented body
- large sucker on both ends
- taxa 3
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- RIFFLE BEETLE
- small bug with wings
- taxa 1
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- SNAIL
- hard shell
- left hand opening=pouch snail
- right hand opening=gilled snail
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- WATER PENNY
- flat saucer
- 6 legs
- taxa 1
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- CRANE FLY
- plump like a caterpillar
- taxa 2
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- WATER BOATMAN
- not a benthic
- walks on the water
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